45
12. Addendum 1: Calibration Tips
You only need one calibration for measurement throughout the entire range of the
meter. If a range was not calibrated, the meter automatically detects the closest range
calibrated and uses that calibration information. However, only the ranges that were
calibrated have maximum accuracy.
• If you are measuring in ranges near to or greater than 20 mS (10 ppt), or near to or
lower than 100 µS (50 ppm), calibrate the meter at least once a week to get speci-
fied ±1% F.S. accuracy.
• If you are measuring in the mid ranges and you washed the probe in deionized
water and stored it dry, calibrate the meter at least once a month.
Wet the probe for 10 minutes before calibrating or taking readings to saturate the
probe surface and minimize drift. If you make measurements at extreme tempera-
tures, calibrate the meter at least once a week.
You should only use the conductivity/TDS probe specified for these meters. These
probes have a built-in temperature sensor. If you use a different probe without a
temperature sensor, you must measure the solution temperature separately and
manually enter the solution temperature (see manual temperature compensation on
pages 18-19).
To Next Page
Loading...
